Title:
FERROMAGNETIC RECOGNIZER OF DOCUMENTS
United States Patent 3509535
US Patent References:
Automatic recognition of fingerprints by sensing the skin surface with electrical apparatus
- - 3231861
Recognizer apparatus responsive to a predetermined relation of plural signals
- - 3246297
Identification and comparison apparatus for contour patterns such as fingerprints
- - 3292149
Circuit for indicating readable, unreadable or missing characters
- - 3305833
Magnetic detection apparatus for currency changing machine
- - 3256984
Automatic recognition of fingerprints by sensing the skin surface with electrical apparatus
- - 3231861
Recognizer apparatus responsive to a predetermined relation of plural signals
- - 3246297
Identification and comparison apparatus for contour patterns such as fingerprints
- - 3292149
Circuit for indicating readable, unreadable or missing characters
- - 3305833
Magnetic detection apparatus for currency changing machine
- - 3256984
Inventors:
Berube, Arthur A.
Publication Date:
04/28/1970
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Export Citation:
Assignee:
ARCS IND INC
Primary Class:
Other Classes:
360/1, 235/493, 194/210, 194/206, 324/226, 209/534, 360/2, 382/135, 235/449
International Classes:
G07D7/00; H04Q3/00
US Patent References:
| 3356992 | Optical detection and comparison apparatus for currency changing machine |